- Definitions|2
- Thesaurus|2.1k
- Abbreviations|0
| vexatious(adjective, dull, difficult, tender, boring) | |
| withering(adjective, painful) | |
| woeful(adjective, painful) | |
| picnic | |
| sound | |
| Daedalean(adjective, hard, fancy, difficult, complex) | |
| Spartan | |
| achievements | |
| active | |
| backbreaker(hard, tough, severe, difficult, painful) | |
| bit much(expression, dull, tedious, irritating, exhausting) | |
| bleeding(adjective, painful) | |
| bloody(adjective, painful) | |
| boresome(adjective, dull, boring, tired, tedious) | |
| breathless | |
| bruised(adjective, painful) | |
| bumpy | |
| burden | |
| can of worms(expression, adjective, idiom, hard, fancy) | |
| careful |
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| APA | Smart Define. (2016). arduous thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/arduous/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "arduous thesaurus" https://smartdefine.org/arduous/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, arduous thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/arduous/thesaurus/synonyms>. |
| MLA | Smart Define. "arduous thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/arduous/thesaurus/synonyms> |